September 19, 2025

Industrial furnace construction in XXL format: AICHELIN builds longest muffle at over 20 meters

During the scheduled maintenance of an AICHELIN SAFED mesh belt furnace at a long-standing customer in England, an impressive project was on the agenda: the replacement of the largest and longest muffle* that AICHELIN has ever manufactured.

  • Length: almost 22 meters
  • Width: 1,35 meters

In comparison, the standard length of a SAFED mesh belt furnace is normally a maximum of 7.2 meters.

Custom-made in XXL format  

This unique component was produced at the AICHELIN Assembly Center Europe (ACE) in Celje, Slovenia. Thanks to maximum precision and outstanding teamwork, the custom-made product was completed in a production time of just 4 months. It was then delivered to England by special transport.

 Top performance through planning and teamwork

The project highlights the capabilities of AICHELIN in several ways:

  • Customized furnace solutions for the most demanding customer requirements
  • Excellent planning and international teamwork across national borders
  • Technological and logistical excellence – even on a large scale
We are proud to have successfully completed this prestigious project together with our customer. Projects like this are only possible thanks to long-standing trust and partnership-based cooperation, for which we are very grateful.
Philippe Maetz, CEO SAFED France SAS

* Brief explanation: What is a gas-tight muffle and for which furnace systems is it used?

A gas-tight muffle made of heat-resistant stainless steel is used for heat treatment under a protective gas atmosphere in SAFED mesh belt systems of types T and BD. Due to the internal overpressure, it forms a hermetically sealed space that is limited by a flame curtain or the direct connection to the oil bath (depending on the type). This enables rapid stabilization and modification of the furnace atmosphere within a few minutes.

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